Source code for airflow.providers.amazon.aws.operators.step_function_get_execution_output
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import json
from typing import Optional
from airflow.models import BaseOperator
from airflow.providers.amazon.aws.hooks.step_function import StepFunctionHook
[docs]class StepFunctionGetExecutionOutputOperator(BaseOperator):
"""
An Operator that begins execution of an Step Function State Machine
Additional arguments may be specified and are passed down to the underlying BaseOperator.
.. seealso::
:class:`~airflow.models.BaseOperator`
:param execution_arn: ARN of the Step Function State Machine Execution
:type execution_arn: str
:param aws_conn_id: aws connection to use, defaults to 'aws_default'
:type aws_conn_id: str
"""
[docs] template_fields = ['execution_arn']
def __init__(
self,
*,
execution_arn: str,
aws_conn_id: str = 'aws_default',
region_name: Optional[str] = None,
**kwargs,
):
super().__init__(**kwargs)
self.execution_arn = execution_arn
self.aws_conn_id = aws_conn_id
self.region_name = region_name
[docs] def execute(self, context):
hook = StepFunctionHook(aws_conn_id=self.aws_conn_id, region_name=self.region_name)
execution_status = hook.describe_execution(self.execution_arn)
execution_output = json.loads(execution_status['output']) if 'output' in execution_status else None
self.log.info('Got State Machine Execution output for %s', self.execution_arn)
return execution_output